. Plants and their ways in South Africa. Botany; Botany. Classification of Pla7its 233 easily be mistaken for a grass. The frond or leaf is just a wiry stalk with very small comb-shaped lobes at the top. Unlike so many ferns which thrive best in shady ravines, it can grow in very dry, hot situations. It is found on mountain tops and down nearly to the sea level. Gleichenia may be distinguished from all other South Africa ferns by the dichotomous branching of the fronds. In the Knysna forests it climbs gracefully up the banks, ten or twelve feet high. Hemitelia capensis, Br., the tree fem, the
. Plants and their ways in South Africa. Botany; Botany. Classification of Pla7its 233 easily be mistaken for a grass. The frond or leaf is just a wiry stalk with very small comb-shaped lobes at the top. Unlike so many ferns which thrive best in shady ravines, it can grow in very dry, hot situations. It is found on mountain tops and down nearly to the sea level. Gleichenia may be distinguished from all other South Africa ferns by the dichotomous branching of the fronds. In the Knysna forests it climbs gracefully up the banks, ten or twelve feet high. Hemitelia capensis, Br., the tree fem, the most beauti- ful fern in .South Africa, extends from Table Mountain to Natal. Pteris aquilina, f^. grows commonly on I. II. III. Fig. 207. —Pinnae of fern leaves. I. Aspidunn u ith :i single sorus ; the spore cases may be seen around the edge of the indusium. II. Asplcuiiaii with several sori. III. A young fern plant growing from the heart-shaped prothal- lium. (From Thomt? and Bennett's " Structural and Physiological Botany ".) The spore cases of Pleris are continuous along the margin of the leaf, which is folded over to protect them. Lomaria capensis, Willd., a large coarse fem with rope- like spreading stems, miy be known by the whole under surface of the fertile fronds being covered with fruit-dots. Hymenophyllum and Trichomanes are found in deep ravines, washed by the spray of waterfalls. The beautiful little fronds are almost transparent, and the delicate creeping stems are like threads. The spore-cases are clustered on a stalk, en- closed in a tubular or cup-shaped indusium. The indusium of Hymetiophyllum is deeply two-loped. That of Tj-iikomanes is not slit, and the fronds are less Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Stoneman, Bertha. London, New York, Longma
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1915
